Psyche’s biggest strength is her curiosity.
This curiosity leads her to uncover Truth, and it helps her survive the trials she went through and pull through every obstacle she faces all the way to completion.
Psyche cries and feels suicidal through every impossible task she is assigned, but she never gives up. She could have enjoyed godly levels of wealth and material comforts for the rest of her mortal days, not fully knowing Love (like you see some women choose under patriarchy). At any point in her journey she could have turned around, went home, and lived a normal life disillusioned with and untouched further by the Divine; but she doesn’t do this. She would rather risk death than suffer that fate.
Psyche is not just a sweet princess, she is a lot more brave, clever and strong than most give her credit for and I love that she has this unmovable stubbornness about her to not accept bullshit and half-truths, and to also not accept what mortals deem “impossible.” Psyche is a goddess who sees things through by any means necessary, and can’t help but to do this because it’s just her nature.